Power Quality Analyzer
Analizzatore di Qualità
della Rete
USER MANUAL
MANUALE ISTRUZIONI
WM23-96
Modular system
Tecnologia modulare
CARLO GAVAZZI
Automation Components
WM23-96: Power Quality Analyzer
Plug and play module system;
Harmonic analysis; Wmax and PFmin
storage. These are only a few among
many other functions performed by
your WM23-96. What’s more, Carlo
Gavazzi means ISO9001 certification,
a working experience of many
decades and a widespread presence
all over the world. All this because
we want our customers to have the
top service and the top products.
Welcome in the Carlo Gavazzi world
and compliments for your smart
choice. Visit our website and
evaluate our range of products:
www.carlogavazzi.com
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CARLO GAVAZZI
Automation Components
Plug and Play
Modules
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Index
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3
CARLO GAVAZZI
WM23-96, Power Quality Analyzer
FW rev. 01
TO BEGIN WITH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .04
■ Front panel description . . . . . . . . . . . . . . . . . . . .04
■ List and description of displayed measuring pages . . . .04
PROGRAMMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . .07
■ Access to the main menu . . . . . . . . . . . . . . . . . . .07
■ Change password . . . . . . . . . . . . . . . . . . . . . . . .08
■ System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .08
■ CT ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .08
■ VT ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .09
■ Dmd calculation . . . . . . . . . . . . . . . . . . . . . . . . .09
■ Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . .11
■ Total harmonic distortion . . . . . . . . . . . . . . . . . . .11
■ Digital outputs . . . . . . . . . . . . . . . . . . . . . . . . . . .12
❑ Digital output 1 . . . . . . . . . . . . . . . . . . . . . . .12
❑ Alarm digital output . . . . . . . . . . . . . . . . . . . .12
❑ Digital output 2 . . . . . . . . . . . . . . . . . . . . . . .14
■ Analogue output . . . . . . . . . . . . . . . . . . . . . . . . .14
■ Setting of RS422/485 serial comm. port address .16
■ Digital filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
■ End of programming . . . . . . . . . . . . . . . . . . . . . .16
■ Reset of min. values . . . . . . . . . . . . . . . . . . . . . .17
■ Reset of max. values . . . . . . . . . . . . . . . . . . . . . .17
USEFUL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . .18
■ How to prevent key-pad programming . . . . . . . . .18
■ Retransmitted variables . . . . . . . . . . . . . . . . . . . .20
■ Alarm digital output . . . . . . . . . . . . . . . . . . . . . . .21
■ Displaying of programming menu . . . . . . . . . . . . .21
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
■ Operations preliminary to the installation . . . . . . .22
Measuring pages description
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Index
Main menu
2
7
■ Front panel cut-out . . . . . . . . . . . . . . . . . . . . . . .23
■ Module combination . . . . . . . . . . . . . . . . . . . . . .24
■ Available modules . . . . . . . . . . . . . . . . . . . . . . . .24
■ Digital input connections . . . . . . . . . . . . . . . . . . .27
■ Open collector output connections . . . . . . . . . . .28
■ RS422/485 port connections . . . . . . . . . . . . . . . .28
■ Elettrical connections diagrams . . . . . . . . . . . . . .30
TECHNICAL FEATURES . . . . . . . . . . . . . . . . . . . . . . . .32
We suggest you to keep the original packing in case it is
necessary to return the instrument to our Technical
Service Department. In order to achieve the best results
with your instrument, we recommend you to read this
instruction manual carefully.
HOW TO USE THE SYMBOLS
Go to the page where the previous main subject is described.
Go to the page where the next main subject is
described.
Go to the page where the subject written on
the top of the current page starts.
Go to the page where the subject written on
the top of the current page ends.
This symbol indicates a particularly important
subject or information.
This symbol indicates that more details are given
on the current subject.
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4
To begin with
Measuring pages
6
■Frontal Panel Description
Back-lighted LCD Display.
Display previous page.
Display next page.
Access to programming or
setting confirmation.
■ List and Description of Displayed
Measuring Pages
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kW∑
PF∑
kvar∑
Hz
VL1-N
VL2-N
VL3-N
V∑
kW∑
PF∑
kVA∑
Hz
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To begin with
VT ratio
3
Index
4
9
6
Display total harmonic distortion for the single phase
voltages expressed as %.
Display total harmonic distortion for the single phase
currents expressed as %.
MW∑ Max
PF∑ Min
Max
Min
kW dmd
kVA dmd
Serial communication
status: r=Rx; t=Tx
(only with serial comm.
module inserted)
kW dmd, Max
kVA dmd, Max
kVA L1
kVA L2
kVA L3
Max
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To begin with
Change password
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8
kvar L1
kvar L2
kvar L3
W L1 Max
W L2 Max
W L3 Max
Max
W L1
W L2
W L3
PF L1 Min
PF L2 Min
PF L3 Min
Min
PF L1
PF L2
PF L3
PF ∑
A L1
A L2
A L3
Neutral current
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When the “AL” box (normally used for the alarm
indication) is active during the programming phase,
it means that the displayed value can be modified.
This rule applies to all the programming menus.
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Programming
Synchronization
5
Measuring pages
11
17
■Access to the main menu
To access to the programming
menus from the measuring and dis-
play phase, press the key: when
the instrument asks for the password, enter the correct PASS value
by means of the and keys;
afterwards confirm by means of the
key. If the password is correct
(when the instrument is new, the
password is 0), the instrument goes
to the main functions menu.
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Access to the
main menu
The scrolling of the measuring
pages is cyclic, at the end it returns
back to the first page on the left.
Display of alarm setting (AL1 and
AL2 if both alarms have been set).
Display of the variable connected
to the alarm.
V L1-2
V L2-3
V L3-1
V ∑
Active alarm indicator.
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Programming
Dmd calculation
3
Index
71017
■System
This function allows the operator to
select the electrical system choosing between three-phase with neutral (3P.n) and three-phase without
neutral (3P).
Choose by means of and
the “SySTEn” function, press
to enter the menu; then, select the
desired system by means of the
and keys and confirm with
.
■CT ratio
This function allows the user to
select the value of the CT ratio.
Example: if the CT primary (current
transformer) has a current of 300A
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■Change Password
This function allows the operator to
choose the desired password value
(from 0 to 1000).
Choose the “CnG.PASS” function
by means of the and keys,
then press to modify PASS,
enter the desired value by means of
the and keys and confirm
the new value with the key.
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By changing the VT and CT
ratio, the energy meters are
reset.
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Programming
Alarm output
7
Main menu
7
13
17
■VT ratio
This function allows the user to select the
value of the VT ratio. Example: if the primary of the connected VT (voltage transformer) is of 20kV and the secondary is
100V, the VT ratio will correspond to 200
(obtained by carrying out the following
calculation: 20000/100). Choose the
“Vt.rAtio” function by means of the
and keys; to enter the menu press
, then select the desired value by
means of the and keys and
confirm it with .
In order to store
the new value, carry out the reset
(rESEt YES
).
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and the secondary has a current of
5A, the CT ratio corresponds to 60
(obtained by carrying out the following calculation: 300/5). Choose
the “Ct.rAtio” function by means of
the and keys; to enter the
menu press ; then select the
desired value by means of the
and keys and confirm the new
value with .
In order to store the
new value, carry out the reset
(rESEt YES
).
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Programming
Digital outputs
5
Measuring pages
71217
If for example
, you select the value “15 minutes”,
the instrument calculates the demand value and
updates the value every 15 minutes. See the diagram below.
■Synchronization
The synchronization allows the instrument, by means of the
digital inputs, to start the integration of the power dmd at
the same time as the official watthour meter. Without digital
input module, the reset and the start of the energy integra-
Where: Pc is the contractual power
t1 is the selected integration period
■Dmd calculation
This function allows the user to
select the integration time of the W,
VA and var demand value (var only
by means of RS485). To enter these
functions select “P.int t” from the
main menu by the and
keys; to enter in the menu press
. Set the desired value by
means of the and keys and
confirm the new value with .
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Programming
Serial port
9
VT ratio
7
15
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ule). Every subsequent change of
status, resets and synchronizes
again the calculation of the power
dmd. It is possible to enable or disable the synchronization function
managed by the digital inputs.
Choose the “SYnC” function by
means of the and keys, to
enter the menu press ; Then set
“YES” to enable the function or
“No” to disable the synchronization
by means of the and keys
and confirm with .
■Total Harmonic Distortion
This function allows the user to
enable the FFT analysis (Fast
Fourier Transform) and the display
of the total harmonic distortion (see
also “displayed measuring pages”
on page 5). Choose the “thd” func-
tion by means of the and
keys, to enter the menu press ;
then choose if the function is to be
enabled (YES) or disabled (NO) by
means of the and keys and
confirm with .
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tion are carried out as soon as the instrument is switched
off. When the DIGITAL INPUT module is installed, the synchronization starts as soon as one of the digital inputs
changes status (contacts 2 and 3 of the digital input mod-
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Programming
Analogue output
7
Main menu
71417
■Digital Outputs
❑Digital Output 1
This function enables
to set the parameters of the digital outputs. Choose the
“diGout” function by means of
the and keys, to enter
the menu press . Then, set
one of the following parameters:
ALr: access to the alarm function (see alarm digital output)
confirm with to enter the relevant menu;
rEn: enable the activation of the
output by means of the serial
communication, confirm with
to enable the function.
❑Alarm Digital Output
This function allows
the user to set the parameters of
the alarm digital output. Choose
the “diGout1-ALr” function by
means of the keys: to
enter the menu press . Then,
set one of the following parameters:
VAr: choose the variable to be
associated to the alarm activa-
tion by means of the and
keys and confirm with ;
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Alarm digital
output
Digital output 2
on page 14
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Programming
Reset of max and min values
11
Harmonic distortion
7
17
17
rnG: select the position of the
digital point;
Set-on: activation set-point,
value of the variable over which
the alarm is activated. Select the
value of the variable by means of
the and keys and con-
firm with ;
Set-oFF: deactivation set-point,
value of the variable over which
the alarm is deactivated. Select
the value of the variable by
means of the and keys
and confirm it with ;
nd: normally de-energized output when there is no alarm.
nE: normally energized output
when there is no alarm.
Select the output status by
means of the and keys
and confirm it with ;
SEC: delay time at the activation
of the alarm output. Choose the
value of the delay time in sec-
onds by means of the and
keys (up to 255 seconds)
and confirm with .
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Digital Output 2
on page 14
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1.2..
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1.2..
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14
Programming
End of programming
9
VT ratio
71617
❑Digital Output 2
ALr: access to the alarm function
(see alarm digital output on page
12) confirm with to enter the
relevant menu;
rEn: enable the activation of the
output by means of the serial com-
munication, confirm with to
enable the function.
■Analogue output
From the main menu select “AnA
out” by means of the and
keys; to enter the menu press :
VAr: variable to be associated to
the output, choose among those
available (see on page 20) by
means of the and keys
and confirm the selection with
LoE: minimum value of the variable
input range. Select the desired
value by means of the and
keys and confirm it with .
HiE: maximum value of the variable
input range. Select the desired
value by means of the and
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15
Programming
Useful information
13
Alarm output
7
19
17
keys and confirm it with .
LoA: % value of the zero of the
output range (0-20mA, 0-10V) that
is generated by the minimum
measured value (LoE). Select the
desired value by means of the
and keys and confirm it with
.
HiA: % value of the full scale of the
output range (0-20mA, 0-10V) that
is generated by the maximum
measured value (HiE).
Select the desired value by means
of the and keys and con-
firm it with .
See also “Example 1” in useful
information on page 18.
■ RS422/485 Serial port
address
Select “AddrESS” from the main
menu by means of the and
keys; to enter the menu press ,
then set the desired address value
(from 1 to 255) by means of the
and keys and confirm it with
.
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Programming
Useful information
11
Synchronization
71817
■Digital Filter
Select “FiLtEr” by means of the
and keys: to enter the menu
press . Select the parameters to
be set with the and keys, to
enter the menu press .
There are two parameters:
- rnG, to set the operating range of
the digital filter. The value is
expressed as % of the full scale
value: set the desired value (from 0 to
100%) by means of the and
keys and confirm it with ;
- Coe, to set the filtering coefficient of
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the instantaneous measurements, set the desired value (from 1 to
16) by means of the and keys and confirm it with .
By
increasing the value both the stability and the settling time of the
measurements are increased. See also “Example 2” in Useful
Information on page 19.
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■End of programming
Use it to exit from programming and
go back to the measuring mode.
Select “End” from the main menu by
means of the and keys, con-
firm it with
.
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To measuring mode
Instrument
revision
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17
Programming
Up/down alarm
15
Serial port
7
21
■Reset of min values
Select “rESEt MI” from the main
menu by means of the keys,
then confirm with . When the
instrument asks for the reset, choose,
by means of the keys:
“no MI” to avoid the reset or
“YES MI” to confirm it.
Then, press to carry out the command.
■Reset of max values
Select “rESEt MA” from the main
menu by means of the keys,
then confirm with . When the
instrument asks for the reset, choose,
by means of the keys:
“no MA” to avoid the reset or
“yes MA” to confirm it.
Then, press to carry out the command.
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RESET
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RESET
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Useful Information
What’s ASY
13
Digital outputs
20
21
■How to prevent the programming by key-pad
It is possible to prevent any access to
programming by keypad by modifying the
selector under the power supply slot (see
the drawing on the left), or closing the contact number 1 of the digital input module,
when present.
The variables measured by the instrument are
correct if the polarities of the inputs have been
observed (as shown in the figure below); if not,
measuring and retransmission errors may
occur due to the wrong direction of the current flowing
in the primary / secondary of the connected current
transformer.
■Setting Examples
Example 1 “Analogue output”: take the measure of a
power consumed up to 100kW, and retransmit it with a signal from 4 to 20 mA; the module to be used is AO1050 or
AO1026 (single or dual output from 0 to 20mA), the instrument must be set as follows:
• VAr: (variable), W∑ (system active power)
• LoE: (minimum electrical scale) 0.0 K; the K and M mul-
Selector: turn the selector with a little screwdriver.
- Free programming.
- Lock programming.
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Useful Information
Mounting
17
Reset min and max values
18
23
21
tiples are automatically selected by the instrument according to the selected VT and CT values;
• HiE: (maximum electrical scale) 100.0 K; the K and M
multiples are automatically selected by the instrument
according to the selected VT and CT values;
• LoA: (minimum electrical scale of the analogue output)
20.0% for 4mA, the calculation to be carried out is: (minimum output value/ full scale output value)*100 =
(4mA/20mA)*100 = 20%
• HiA: (maximum electrical scale of the analogue output)
100.0% for 20mA, the calculation to be carried out is: (maximum output value / full scale output value)*100 =
(20mA/20mA)*100 =100%
Example 2 “Use of digital filter”: it’s necessary to stabilize
the displayed value of the VL1-N variable that varies
between 222V and 228V. The parameters of the digital filter
are to be set as follows:
• rnG: the variable varies within the average value, the
amplitude of which is equal to ±1.3% of the variable’s rated
value, calculated as follows:
(228-222)/2=±3V, then ±3*100/231V=±1.3% where 231V
is the phase-neutral rated value of a 400V input range). The
“range” parameter, that corresponds to the action range of
the digital filter, is set at a value which is slightly higher than
the percentage amplitude of the fluctuation: e.g. 2%.
• CoE: if the new value acquired by the instrument is within the filter’s action range, then the new displayed value is
calculated by summing algebraically to the previous value
the variation divided by the filtering coefficient. As a consequence, a value which is higher than this coefficient implies
a longer settling time and therefore improves the stability.
The latter can also be improved by increasing the filtering
coefficient: the admitted values are within 1 and 16. Enter the
value in consecutive attempts until you reach the desired
stability.
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Useful Information
Installation
15
Serial port
182121
■What is ASY
The ASY variable allows the user to control the symmetry
of the delta voltages (for systems without neutral) and star
voltages (for systems with neutral). The variable is calculated according to the following formula:
Where: Vmax is the max. value among VL1-N, VL2-N, VL3-N
Vmin is the min. value among VL1-N, VL2-N, VL3-N
Vavg is the average: (VL1-N, VL2-N, VL3-N)/3
The variable is not displayed by the instrument, but it can be
retransmitted by the analogue or RS422 / 485 output and
can be controlled by means of the alarm.
■Retransmitted Variables
N° Variable Three-phase Three-phase Note
with neutral without neutral
1 V L-NΣ x Σ = system
2 V L-LΣ xxΣ = system
3WΣ xxΣ = system
4 varΣ xxΣ = system
5VAΣ xxΣ = system
6PFΣ xxΣ = system
7 THD V x x
if FFT activated
8 THD A x x
if FFT activated
9A n x
10 VA dmd x x
11 W dmd x x
12 ASY x x asymmetry
13
All the instantaneous variables (powers, currents, voltages)
Vmax - Vmin
Vavg
*100ASY=
■Alarm digital output
The activation of the alarm can be UP or DOWN depending
on how the ON and OFF parameters have been set, as per
the following table:
■Displaying of programming menu
It may be useful to know that the menus displayed
by the instrument depend on its configuration;
e.g.: the instrument will not display the menu relevant to the digital outputs if the optional module
is not inserted.
IT IS IMPORTANT that the instrument is
switched off when you plug-in or disconnect the
modules.
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Useful Information
Modules available
19
Setting examples
18
25
ON-OFF
VALUES STATUS
ON ≥ OFF UP
ON < OFF DOWN
ALARM TYPE
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22
Installation
Available Modules
17
Reset of min and max values
24
31
■Preliminary operations
Before switching the instrument on, make sure that the
power supply voltage corresponds to what is shown on the
side label of the relevant module.
■Before mounting the modules
To know in which slot every module is to be mounted,
refer to the figure on page 24. For a correct mounting of the
instrument, insert the modules in the relevant slots, then, at
the end, enter the central module, which can be a blind type
module or an RS232 communication module. The central
module will help fixing also the other modules in the relevant
slots. To remove the modules use a screwdriver as shown in
the picture below.
Gently depress the
two fixing tabs.
Directions 1-4.
1
Remove the central module
from its slot: press your
thumb towards points 2-5.
2
Extract the
central
module.
3
Any other slots that you haven’t
used must be filled with the relevant blind plug modules supplied with the instrument.
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23
Installation
Optional module connections
21
Useful information
22
27
31
■Overall dimensions and panel cut-out
❑Mounting
Insert the instrument (holding
its front) and fasten it (from the
back) by fixing the two lateral
brackets (1) (supplied with the
instrument) to the appropriate
location (2), using the two
screws (3) supplied with the
instrument.
1
3
2
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24
Installation
Power supply modules
19
Useful information
222631
■Position of the slots and relevant modules
■Available modules
❑Analogue output modules
B
C
D
PU
PS
IM
Single analogue output
AO1050 (20mADC)
AO1051 (10VDC)
AO1052 (±5mADC)
AO1053 (±10mADC)
AO1054 (±20mADC)
AO1055 (±1VDC)
AO1056 (±5VDC)
AO1057 (±10VDC)
Dual analogue output
AO1026 (20mADC)
AO1027 (10VDC)
AO1028 (±5mADC)
AO1029 (±10mADC)
AO1030 (±20mADC)
AO1031 (±1VDC)
AO1032 (±5VDC)
AO1033 (±10VDC)
A
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25
Installation
Serial port connections
23
Mounting
22
29
31
DESCRIPTION A B C D PU PS IM
Single analogue output ✓
Double analogue output ✓
RS485 Serial port ✓
RS232 Serial port ✓
Single relay output ✓✓
Single open coll. output ✓✓
Dual relay output ✓✓
Dual open coll. output ✓✓
3 digital inputs ✓
3 digital inputs+AUX ✓
Power supply ✓
Inputs ✓
❑Open collector digital output modules
AO1058
Single relay
output
AO1035
Dual relay
output
AO1059
Single open
collector
output
AO1036
Dual open
collector
output
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26
Installation
Serial port connections
21
Useful information
222831
AQ1038
3 digital
inputs
AQ1042
3 digital
inputs + aux
AR1034
RS485 serial
port
AR1039
RS232 serial port
AP1020
90-260 VAC/DC Power supply
AP1021
18-60VAC/DC Power supply
AP1025
24VAC Power supply
AP1024
48VAC Power supply
AP1023
115VAC Power supply
AP1022
230VAC Power supply
❑Digital input modules
❑Serial port modules
❑Power supply modules
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27
Installation
ARON connections
25
Analogue modules
22
31
31
Connection by
NPN transistor.
AQ1042 Digital
input module
Connection by
contacts.
AQ1042 Digital
input module
Connection by
contacts.
AQ1038 Digital
input module
Connection by
PNP transistor.
AQ1042 Digital
input module
■Optional module connections
❑ Digital inputs
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28
Installation
Electrical connections
23
Mounting
223031
This diagram is valid
also for the open collector modules with a
lower number of outputs. The value of the
load resistances (Rc)
must be chosen so that
the short-circuit current
is lower than 100mA;
the VDC voltage must
be lower than or equal
to 30 VDC.
❑Relay outputs
❑Open collector outputs
AO1058
single relay output
AO1035
dual relay output
AO1059 single open collector
output
AO1036 dual open collector
output
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29
Installation
Harmonic analysis
27
Digital input modules
22
33
31
❑RS485/422 serial port (AR1034)
4-wire connection.
Additional devices provided with RS422/RS485 (that is RS
1,2,3...N) are connected in parallel.
2-wire connection. Additional devices provided with
RS422/RS485 (that is RS 1, 2, 3 ...N) are connected in parallel.
The termination of the serial output is carried out
only on the last instrument of the network, by
means of a jumper between (Rx+) and (T). We recommend you to use the 4-wire connection: by
means of the serial port the data are exchanged faster.
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30
Installation
Technical features
25
Modules available
223231
■Electrical diagrams
❑Single-phase connection
❑Three-phase, 4-wire, unbalanced load
L
1
N
L1
N
L3
L2
U
1
3 5
2
4 6
I
L1
L2
L3
8 7 10
9
CT and VT connectionsCT connections
L
1
N
L1
N
L3
L2
U
1
3 5
2
4 6
I
L1
L2
L3
8 7 10
9
CT connections
(4-wire system)
CT and VT connections
(4-wire system)
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31
Installation
Software functions
29
Serial port connections
22
35
CT connections
(3-wire system) ARON
CT and VT connections
(3-wire system) ARON
❑ARON connection, 3-phase, 3-wire, unbalanced load
CT and VT connections
(3-wire system)
3 CT and 3 VT connections
(3-wire system)
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32
Technical Features
RS422/485
27
Optional modules conn.
34
37
■Number of inputs
Current: 3
Voltage: 4
■Accuracy
(display, RS422/RS485) In=5A; Pn= In* Un
UN: FS ranges AV4-5-6-7
Current: ±0.5% In +2DGT
Phase-neutral voltage: ±1% Un +2DGT
Phase-phase voltage: ±0.5% Un +2DGT
Frequency: ±0.1% Hz
Active power (@ 25°C ± 5°C, R.H. ≤ 60%): ±1% Pn +2DGT
Reactive Power (@ 25°C ± 5°C, R.H. ≤60%): ±2% Pn +2DGT
Apparent power (@ 25°C ± 5°C, R.H. ≤60%): ±1% Pn +2DGT
Harmonic distortion:
(@ 25°C ± 5°C, R.H. ≤ 60%): ±(3% up to the 16th harmonic)
■Additional errors
Humidity:
≤0.3% FS from 60% to 90% H.R.
■Temperature drift
≤ 200ppm/°C
■Display
Type: LCD, 70x 38 mm, back lighted
Display of instantaneous variables: 4 x 3 1/2 digit
■Measurements
Current, voltage, power, power factor, frequency, harmonic distortion. TRMS measurement of a distorted
wave.
Coupling type: direct
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33
Technical Features
User’s Page
31
Electrical connections
32
38
37
■Input impedance
AV4: 208VLL 5(6)AAC (AV4): >200 kΩ
AV5: 400VLL 5(6)AAC (AV5): >900 kΩ
AV6: 100VLL 5(6)AAC (AV6): >200 kΩ
AV7: 660VLL 5(6)AAC (AV7): >900 kΩ
■Frequency
50 to 60 Hz
■Harmonic analysis
Analysis principle: FFT
Harmonic measurement: Current, Up to 16th harmonic
Voltage: Up to 16th harmonic
Type of harmonics: THD VL1, THD VL2, THD VL3, THD AL1,
THD AL2, THD AL3
Display pages:
THD %
System: The harmonic distortion can be measured in both
3-wire or 4-wire systems.
■Interface modules technical features
Analogue Outputs (on request)
Number of outputs: 1 (+1 redundant)
Range: 0 to 20 mADC, 0 to ±20 mADC, 0 to ±10 mADC,
0 to ±5 mADC, 0 to 10 VDC, 0 to ±10 VDC, 0 to ±5 VDC
0 to ±1 VDC
Accuracy: ±0.2%F.S.
Temperature drift: ≤500ppm/°C
Scaling factor: Programmable within the whole range of
retransmission; it allows the retransmission of all values
within the min and max relevant to the used module.
Response time: 900 ms (FFT filter excluded)
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34
Technical Features
General specifications
31
Electrical connections
323637
Ripple:
≤1%
Load: 20 mADC ≤ 600 Ω; ±20 mADC ≤ 550 Ω; ±10 mADC
≤1100 Ω; ± 5 mADC ≤ 2200 Ω; 10 VDC ≥ 10 kΩ; ±10 VDC
≥10 kΩ; ± 5 VDC ≥ 10 kΩ; ± 1 VDC ≥ 10 kΩ
Insulation: by means of optocouplers, 4000 V
RMS
output to
measuring input 4000 V
RMS
output to power supply input.
RS422/RS485 (on request). Module: AR 1034
Type: Multidrop, bidirectional (static and dynamic variables)
Connections: 2 or 4 wires, max. distance 1200m, termina-
tion directly on the instrument
Addresses: 1 to 255, selectable by key-pad
Protocol: MODBUS/JBUS (RTU)
Data (bidirectional):
Dynamic (reading only): system and phase variables
Static (reading/writing): all the configuration parameters,
activation of the static output.
Data format: 1 start bit, 8 data bit, no parity,1 stop bit
Baud-rate: 9600 bit/s.
Insulation: by means of optocouplers, 4000 V
RMS
output to
measuring input, 4000 V
RMS
output to power supply input
RS232 (on request) - module AR1039 bidirectional (static
and dynamic variables)
Connections: 3 wires, max. distance 15m,
Data format: 1 start bit, 8 data bit, no parity, 1 stop bit
Baud-rate: 9600 bauds
Protocol: MODBUS/JBUS (RTU)
Digital outputs (on request) AO1059/AO1036 module
To be used as alarm or remote control.
Alarm outputs
Number of outputs: up to 2, independent
Alarm type: Up alarm, down alarm
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35
Technical Features
33
Harmonic analysis
32
37
Controlled variables: V∑, Vn∑, PF∑, W∑, VA∑, var∑,
Wdmd, VAdmd, An, ASY (asymmetry), THD V LN (the highest
value among the three phases) THD A (the highest values
among the three phases);
On-time delay: 0 to 255s
Output type: SPDT relay AC 1-8A @ 250VAC, DC 12-5A @
24VDC, AC 15-2.5A @ 250VAC, DC 13-2.5A @ 24VDC
Insulation: by means of optocouplers, 4000 V
RMS
output to
measuring input, 4000 V
RMS
output to supply input; insulation
between the two outputs: functional.
■Software functions
Password: Numeric code of max 4 digits; 2 protection levels
of the programming data
1st level, Password “0”, no protection
2nd level, Password from 1 to 255, all data are protected.
Transformer ratio: CT from 1 to 5000
VT from 1.0 to 100.0 where, CT x VT≤10000 max
Power dmd: Integration time
programmable from 1 to 30 min
Filter: filter operating range from 0 to 100% of the input electrical scale
Filtering coefficient: 1 to 16
Filter action: measurements, alarms, serial output (fundamen-
tal variables V, A, W and their derived ones).
Display up to 4 variables per page (
3-phase with neutral system):
Page 1:
V L1, V L2, V L3, V LN∑
Page
2: V L12, V L13, V L31, V∑
Page 3:
A L1, A L2, AL3, An
Page 4: PF L1, PF L2, PF L3, PF∑
Page 5: PF L1(min), PF L2(min), PF L3(min),
Page 6: W L1, W L2, W L3
Page 7: W L1(max), W L2(max), W L3(max),
Page 8: var L1, var L2, var L3
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36
Technical Features
User’s page
35
Single Phase Connections
323837
Page 9: VA L1, VA L2, VA L3
Page 10: AL1
Page 11: AL2
Page 12: W∑, PF∑, var∑, Hz
Page 13: W∑, PF∑, VA∑,Hz
Page 14: W∑ (max), PF∑ (min)
Page 15: W dmd, VA dmd, r.t.
Page 16: W dmd (max), VA dmd (max)
Page 17: THD VL1, THD VL2, THD VL3
Page 17: THD AL1,THD AL2, THD AL3
■ Power supply specifications
AC voltage: 90 to 260 VDC/VAC, 18 to 60VDC/VAC, 24 VAC 15+10% 50-60Hz, 48 VAC -15+10% 50-60Hz, 115VAC 15+10% 50-60Hz, 230 VAC -15+10% 50-60Hz
■General specifications
Operating temperature: 0 to +50°C (32 to 122°F)
(R.H. < 90% non condensing)
Storage temperature: -10 to +60°C (14 to 140°F)
(R.H. < 90% non consensing)
Installation category Cat. III (IEC 664)
Key-pad lock: by means of selector placed behind the display
or by means of contact (in case of presence of the module 3
input contacts)
Insulation: 4000 VRMS between all inputs/outputs to ground
Dielectric strength: 4000 VRMS for 1 minute
EMC
Emissions: EN50082-1 (class A) residential, commercial and
light industry environment
Immunity: EN 61000-6-2 (class A) industrial environment
Other standards
Safety: IEC 61010-1, EN 61010-1
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37
Technical Features
35
Software functions
32
Product: IEC 60688-1, EN 60688-1
Approvals: CE
Connections 5(6)A: Screw-type, max 2.5 mm2wires (2 x 1.5mm2)
Housing
Dimensions: 96x96x140 mm
Material: ABS, NORYL, PC (front) self-extinguishing: UL 94 V-0
Protection degree: Front: IP65; Connections: IP20
Weight: Approx. 400 g (packing incl.)
Nota: Some pictures have been digitally modified and may not correspond to
the instrument in all its details.
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38
User’s Page
35
Harmonic analysis
Name: . . . . . . . . . . . . . . . . . . .Surname: . . . . . . . . . . . . .
Company name: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WM23-96 serial number: . . . . . . . . . . . . . . . . . . . . . . . . .
Password: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument’s settings:
CT ratio: . . . . . . . . . . . . . . . . .TV: . . . . . . . . . . . . . . . . . .
System: . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serial address: . . . . . . . . . . . . . . . . . . . . . .
Integration time, min: . . . . . . . . . . . . . . . . .
Alarm set point: . . . . . . . . . . . .ON: . . . . . .OFF: . . . . . . . .
Alarm set point: . . . . . . . . . . . .ON: . . . . . .OFF: . . . . . . . .
Analogue output: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hardware configuration
Slot A: . . . . . . . . . . . . . . . . . . .Slot B: . . . . . . . . . . . . . . .
Slot C: . . . . . . . . . . . . . . . . . . .Slot D: . . . . . . . . . . . . . . .
Programming lock: ON
OFF
NOTE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUR PRODUCTION SITES
Carlo Gavazzi Industri A/S
Hadsten - DENMARK
Inductive and Capacitive
Proximity
Sensors in full metal and
plastic
housings. Photoelectric
Sensors.
Level Sensors: Optical,
Conductive
and Capacitive.
Ultrasonic Sensors and
Magnetic
Switches. Limit Switches.
Dupline Field and Installation
Bus.
Building Automation Systems.
Carlo Gavazzi Ltd
Zejtun - MALTA
Solid States Relays.
Versions for PCB and panel
mounting.
AC Semiconductor Motor
Controllers
Soft starters.
Industrial and PCB Relays.
Carlo Gavazzi Controls SpA
Belluno - ITALY
Energy Management.
Timers and Monitoring
Relays.
Digital Panel Meters and
Temperature Controllers.
SAIET Elettronica SpA
Castel Maggiore (BO) - ITALY
Safety and Magnetic
Switches,
Safety Modules.
Mat Systems, Light Curtains,
Electrical Transient,
Protections.
Measuring Systems and
Encoders.
OUR SALES NETWORK
Carlo Gavazzi GmbH
Wien - AUSTRIA
Carlo Gavazzi NV/SA
Vilvoorde - BELGIUM
Carlo Gavazzi Inc.
Mississauga, ON - CANADA
Montreal, PQ - CANADA
Carlo Gavazzi Handel A/S
Hadsten - DENMARK
Carlo Gavazzi OY AB
Helsinki - FINLAND
Carlo Gavazzi Sarl
Roissy - FRANCE
Carlo Gavazzi GmbH
Weiterstadt - GERMANY
Carlo Gavazzi UK Ltd
Aldershot - GREAT BRITAIN
Carlo Gavazzi SpA
Lainate (MI) - ITALY
Carlo Gavazzi Automation Sdn Bhd
Petaling Jaya, Selangor - MALAYSIA
Carlo Gavazzi BV
Beverwijk - NETHERLANDS
Carlo Gavazzi AS
Porsgrunn - NORWAY
Carlo Gavazzi Lda
Lisboa - PORTUGAL
Carlo Gavazzi SA
Leioa (Bizkaia) - SPAIN
Carlo Gavazzi AB
Karlstad - SWEDEN
Carlo Gavazzi AG
Steinhausen - SWITZERLAND
Carlo Gavazzi Inc.
Buffalo Grove IL - USA
Further information on
www.carlogavazzi.com
CARLO GAVAZZI
Automation Components
WM23 ita-eng code 8020588 02/2003
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